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| Number | Title | Issue Date |
| 6599072 | Corrosion resisting screw with cutting insert A corrosion-resisting, self-tapping screw (1), in particular a concrete screw, to be driven into a bore, which has a wall, comprises a substantially cylindrical core (2) of corrosion-resisting metal with a central longitudinal axis (8); a thread (5), whic... | 07/29/2003 |
| 6514026 | Screw A screw (1), in particular a concrete screw, for being screwed into a drilled hole (20) comprises a core (2) with a pilot end (3), a lengthwise screw-in direction (5) and a central longitudinal axis (4); and a thread (7), which is designed in a single pie... | 02/04/2003 |
| 5112174 | Expanding plug An expanding plug in usual manner comprises an expanding sleeve, an expanding screw and an expanding cone which serves to expand the expanding sleeve and which can be pulled into the expanding sleeve by means of the expanding screw. So as to reduce the ma... | 05/12/1992 |
| 5085544 | Expanding plug and a method to manufacture same An expanding plug comprises an expanding sleeve made in one piece and provided with a continuous longitudinal slot, an expanding body arranged in the expanding sleeve, and a screw engaging with a thread in the expanding body and bearing with its head agai... | 02/04/1992 |
| 4892450 | Fastening element consisting of a tie bolt and a clamping wedge A fastening element comprises a tie bolt (1) and a clamping wedge (2) which for the purpose of transporting and insertion into a bore hole (24) are clamped together via a flange (5), which at the same time is used for attachment of a load (25) to a ceilin... | 01/09/1990 |
